Restore Your Cadillac’s Smooth Performance
Is your 2004 Cadillac CTS experiencing frustrating issues like a persistent check engine light, erratic shifting, stalling, or a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the central computer that manages your engine and transmission. Don’t let a faulty module compromise the performance and reliability you expect. This professionally programmed PCM is the definitive solution to restore your vehicle’s factory operation and get you back on the road with confidence.
Common Symptoms of a Failing PCM & Your Solution
A failing engine computer can manifest in numerous ways, often mimicking other sensor or component failures. If you’re dealing with any of the following, a faulty PCM is a likely culprit:
- Persistent Check Engine Light (CEL) with communication codes (U-codes) or multiple unrelated sensor codes.
- Poor or harsh automatic transmission shifting.
- Engine stalling, sputtering, or misfiring intermittently.
- A significant drop in fuel economy.
- The vehicle cranks but will not start.
- Apparent failure of multiple sensors at once.
This replacement 2004 Cadillac CTS PCM 12581565 is your direct-fit solution. We eliminate the most difficult part of the repair by programming the unit specifically to your vehicle’s unique VIN. This ensures all systems, from the engine and transmission to the anti-theft security, function together seamlessly, just as they did from the factory.
Features & Tangible Benefits
- ✔ VIN-Specific Programming Included: Your module arrives ready for installation, saving you a costly trip to the dealership for programming.
- ✔ Loaded with Latest GM Updates: We flash the unit with the most current software from General Motors, ensuring optimal fuel efficiency, emissions, and performance.
- ✔ Plug & Play Installation: Once programmed, this module is a direct replacement. Simply disconnect the battery, swap the part, and reconnect. No complex procedures required.
- ✔ Guaranteed Compatibility: This unit is a direct replacement for a wide range of service numbers, including 12581565, 12570557, 12576106, and more.
- ✔ This unit is backed by our one-year replacement warranty.: Drive with peace of mind knowing your purchase is protected against defects.
Expert Insight from Our Technicians: A common mistake we see is installing a used PCM from a salvage yard. While it may look identical, it’s programmed for a different vehicle’s options, security key, and emissions package. This inevitably leads to a no-start condition or a dashboard full of warning lights. Our VIN programming service isn’t just a convenience; it’s the essential step that ensures the module communicates correctly with your specific vehicle, getting the repair done right the first time.
By choosing this pre-programmed 2004 Cadillac CTS PCM 12581565, you are not just buying a part; you are investing in a reliable, hassle-free repair that restores the integrity of your vehicle’s complex electronic system. Take control of your repair and avoid unpredictable dealership costs.
Frequently Asked Questions
Do I need to have this module programmed?
No. The main benefit of our service is that we program the module for you before it ships. All you need to do is provide us with your vehicle’s 17-digit VIN during or after checkout. It will arrive ready to install.
Is this part difficult to install?
For the 2004 Cadillac CTS, the PCM is located in the engine compartment on the passenger side. Physically replacing it is straightforward, typically involving a few bolts and electrical connectors. The most critical step is to disconnect the vehicle’s battery before starting the work. If you are not comfortable with automotive electronics, we recommend professional installation.
How do I provide my VIN?
You can add your VIN in the notes section during checkout or send it to us in a message after you complete your purchase. We cannot ship your part until we receive the VIN to program it.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM, then yes, this part will resolve the issue. After installation, it is recommended to clear any stored diagnostic trouble codes (DTCs) with a standard OBD2 scanner.
What if my original part has a different number on it?
This module is compatible with a wide range of service numbers. Please check the list in our description, which includes 12581565, 12570557, 12570558, 12576106, 12576869, 12578127, and more. As long as your number is on that list, this part is the correct replacement.
Is a ‘relearn’ procedure required after installation?
In most cases for these vehicles, a specific ‘relearn’ procedure is not required as our programming handles the critical security and operating parameters. However, some vehicles may require a Case/Crankshaft Variation Relearn for optimal performance, which can be done by many professional scan tools.